Harwell, E. M., & Duvin, R. (1979). Managing and training people ([3rd ed.].). Lebhar-Friedman Books.
Cita Chicago (17th ed.)Harwell, Edward M., i Robert Duvin. Managing and Training People. [3rd ed.]. New York: Lebhar-Friedman Books, 1979.
Cita MLA (8th ed.)Harwell, Edward M., i Robert Duvin. Managing and Training People. [3rd ed.]. Lebhar-Friedman Books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.